Principle of Los Angles abrasion test

To produce the abrasive action by using standard steel balls which mixed with the aggregate and rotated in a drum for the specific number of revolution cause an impact on aggregate, The percentage wear due to rubbing with steel balls is determined and is known as abrasion value.

Prepare the sample by the portion of an aggregate sample retained on the 1.70 mm sieve and place it in the large rotating drum that contains a shelf plate attached to the outer wall.